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Message-Id: <1500859394-1799-2-git-send-email-wzz@rock-chips.com>
Date: Mon, 24 Jul 2017 09:23:13 +0800
From: zain wang <wzz@...k-chips.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller" <davem@...emloft.net>,
Heiko Stuebner <heiko@...ech.de>
Cc: jekarlson@...il.com, shawn.lin@...k-chips.com,
linux-crypto@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
zain wang <wzz@...k-chips.com>
Subject: [RESEND PATCH 1/2] crypto: rockchip - move the crypto completion from interrupt context
It's illegal to call the completion function from hardirq context,
it will cause runtime tests to fail. Let's build a new task (done_task)
for moving update operation from hardirq context.
Signed-off-by: zain wang <wzz@...k-chips.com>
---
drivers/crypto/rockchip/rk3288_crypto.c | 39 ++++++++++++++++------
drivers/crypto/rockchip/rk3288_crypto.h | 4 ++-
drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c | 2 +-
drivers/crypto/rockchip/rk3288_crypto_ahash.c | 2 +-
4 files changed, 33 insertions(+), 14 deletions(-)
diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c
index d0f80c6..c2b1dd7 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.c
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -169,24 +169,22 @@ static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id)
{
struct rk_crypto_info *dev = platform_get_drvdata(dev_id);
u32 interrupt_status;
- int err = 0;
spin_lock(&dev->lock);
interrupt_status = CRYPTO_READ(dev, RK_CRYPTO_INTSTS);
CRYPTO_WRITE(dev, RK_CRYPTO_INTSTS, interrupt_status);
+
if (interrupt_status & 0x0a) {
dev_warn(dev->dev, "DMA Error\n");
- err = -EFAULT;
- } else if (interrupt_status & 0x05) {
- err = dev->update(dev);
+ dev->err = -EFAULT;
}
- if (err)
- dev->complete(dev, err);
+ tasklet_schedule(&dev->done_task);
+
spin_unlock(&dev->lock);
return IRQ_HANDLED;
}
-static void rk_crypto_tasklet_cb(unsigned long data)
+static void rk_crypto_queue_task_cb(unsigned long data)
{
struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
struct crypto_async_request *async_req, *backlog;
@@ -210,11 +208,26 @@ static void rk_crypto_tasklet_cb(unsigned long data)
dev->ablk_req = ablkcipher_request_cast(async_req);
else
dev->ahash_req = ahash_request_cast(async_req);
+ dev->err = 0;
err = dev->start(dev);
if (err)
dev->complete(dev, err);
}
+static void rk_crypto_done_task_cb(unsigned long data)
+{
+ struct rk_crypto_info *dev = (struct rk_crypto_info *)data;
+
+ if (dev->err) {
+ dev->complete(dev, dev->err);
+ return;
+ }
+
+ dev->err = dev->update(dev);
+ if (dev->err)
+ dev->complete(dev, dev->err);
+}
+
static struct rk_crypto_tmp *rk_cipher_algs[] = {
&rk_ecb_aes_alg,
&rk_cbc_aes_alg,
@@ -361,8 +374,10 @@ static int rk_crypto_probe(struct platform_device *pdev)
crypto_info->dev = &pdev->dev;
platform_set_drvdata(pdev, crypto_info);
- tasklet_init(&crypto_info->crypto_tasklet,
- rk_crypto_tasklet_cb, (unsigned long)crypto_info);
+ tasklet_init(&crypto_info->queue_task,
+ rk_crypto_queue_task_cb, (unsigned long)crypto_info);
+ tasklet_init(&crypto_info->done_task,
+ rk_crypto_done_task_cb, (unsigned long)crypto_info);
crypto_init_queue(&crypto_info->queue, 50);
crypto_info->enable_clk = rk_crypto_enable_clk;
@@ -380,7 +395,8 @@ static int rk_crypto_probe(struct platform_device *pdev)
return 0;
err_register_alg:
- tasklet_kill(&crypto_info->crypto_tasklet);
+ tasklet_kill(&crypto_info->queue_task);
+ tasklet_kill(&crypto_info->done_task);
err_crypto:
return err;
}
@@ -390,7 +406,8 @@ static int rk_crypto_remove(struct platform_device *pdev)
struct rk_crypto_info *crypto_tmp = platform_get_drvdata(pdev);
rk_crypto_unregister();
- tasklet_kill(&crypto_tmp->crypto_tasklet);
+ tasklet_kill(&crypto_tmp->done_task);
+ tasklet_kill(&crypto_tmp->queue_task);
return 0;
}
diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h
index d7b71fe..65ad1c2 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.h
+++ b/drivers/crypto/rockchip/rk3288_crypto.h
@@ -190,9 +190,11 @@ struct rk_crypto_info {
void __iomem *reg;
int irq;
struct crypto_queue queue;
- struct tasklet_struct crypto_tasklet;
+ struct tasklet_struct queue_task;
+ struct tasklet_struct done_task;
struct ablkcipher_request *ablk_req;
struct ahash_request *ahash_req;
+ int err;
/* device lock */
spinlock_t lock;
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
index b5a3afe..8787e44 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
@@ -42,7 +42,7 @@ static int rk_handle_req(struct rk_crypto_info *dev,
spin_lock_irqsave(&dev->lock, flags);
err = ablkcipher_enqueue_request(&dev->queue, req);
spin_unlock_irqrestore(&dev->lock, flags);
- tasklet_schedule(&dev->crypto_tasklet);
+ tasklet_schedule(&dev->queue_task);
return err;
}
diff --git a/drivers/crypto/rockchip/rk3288_crypto_ahash.c b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
index 7185882..9b55585 100644
--- a/drivers/crypto/rockchip/rk3288_crypto_ahash.c
+++ b/drivers/crypto/rockchip/rk3288_crypto_ahash.c
@@ -204,7 +204,7 @@ static int rk_ahash_digest(struct ahash_request *req)
ret = crypto_enqueue_request(&dev->queue, &req->base);
spin_unlock_irqrestore(&dev->lock, flags);
- tasklet_schedule(&dev->crypto_tasklet);
+ tasklet_schedule(&dev->queue_task);
/*
* it will take some time to process date after last dma transmission.
--
1.9.1
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